Fruit-jar.



9m. 0 m 7 2 y a M d e t n e t a P N. .U `S A M F. 2, .m 7 nm N F R U IT J A R (Application led Oct. 25, 1901.)

(No Model'.)

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UNTTnD STATES PATENT OFFICE.

FREDERICK MASON, OF DAVENPORT, IOVA.

FRU lT-JAR.

SPECIFICATION Aforming part of YLetters Patent N o. 701,213, dated May 27, 1902.

Application filed October 25, 1901. Serial No. 79,986. (No modell To all whom, zi may concern:

Be it known that 1, FREDERICK MASON, a citizen of the United States, residing at Davenport, in the county of Scott andV State of Iowa, have invented a new and useful Fruit- J ar, of which the following is a specification.

This invention relates to fruit-jars and the like, and particularly to means for closing the same; and the purpose of the same is to provide means for reliably closing the mouth of a jar or the like of a convenient structure and adapted to be readily applied and easily removed and contemplates a plurality of features which unitedly contribute to produce perfect securement against leakage or the ingress of air to the jar or the like.

The invention consists in the construction and arrangement of the several parts, which will be more fully hereinafter described and claimed.

1n the drawings, Figure 1 is a transverse vertical section of a jar and closure embodying the features of the invention. Fig. 2 is a detail perspective view of the cap. Fig. 3 is a detail perspective view of the clamp.

Similar numerals of reference are employed to indicate corresponding parts in the views.

The numeral 1 designates a jar-body, which in the present instance is shown as having a diameter greater than that usuallyT found in jar structures and of less vertical height than the ordinary jar-body; but the features of the invention are not confined to any precise form of jar-body or like receptacle, and it will be seen from the disclosure hereinafter made that the general structure of a jar or receptacle will not have to be materially modied to adapt the same for the reception of and cooperation with the parts which will be hereinafter set forth. The body 1 is provided with a neck 2 of considerable diameter and having an inner straight wall 3 rising from a lower horizontal shoulder 4, provided by forming the jar at the point of intersection of the neck with the body with an annular ledge 5, which serves as the means of communication between the interior of the body and the neck. The neck 2 is also provided with an outer horizontal flange 6, at the 5o upper end thereof, for a purpose which will presently appear.

The closure for the jar comprises a cap 7,hav

inga concavity 8 in the top thereof, with an upwardly-projecting centrally-located bearingboss 9, having an upper cavity 10, the upper terminal of the boss being below the surrounding rim 11 of the cap 7 and which is the highest part of the latter and forms the margin for the concavity 8. The rim 11 is of less diametrical extent than the lower portion of the cap, and surrounding the latter is a peripheral bevel 12 of considerable extent and extending inwardly and upwardly to the rim 11 from a lower peripheral bearing-face 13, which contacts closely with the inner wall 3 of the neck 2 when the cap is disposed in closing position in said neck. The formation of the bevel 12 provides,`with the adjacent part of the neck, an angular space for receiving a sealing material-such as paraffin, sealing-wax, or the like-Which may be carried up to a level with the rim-11, as indicated by dotted lines in Fig. l, and thereby produce a tightly-sealed joint which will prevent the air from entering the jar and likewise leakage of juices or fluids from the interior of the jar. The lower bearing edge'll of the cap is formed with a depending V-shaped rib 15, which extends completely around the said edge, and between the said edge and the shoulder 4L a rubber gasket 16 'is interposed, and on this gasket the said rib 15 is arranged. When pressure is exerted on the cap to lock it in immovable relation to the neck, the rib 15 sinks into the gasket 16 and establishes a reliably air-tight joint or hermetic seal by causing the rubber of the gasket to expand or push up over the opposite portions of said rib, and said rib construction also facilitates the removal of the cap, because the" actual bearing or contacting surface of said cap in relation to the gasket is materially less than in ordinary jar structures, and consequently the gasket will not so readily adhere to the bearing edge of the cap. The rib structure and gasket will produce a joint sufficiently tight to exclude entrance of air into the jar or prevent leakage of the contents of the latter without any further sealing means; but the filling of paraffin or other material `in the space between thebevel 12 and the adja- ICO The neck 2 is of considerable depth, considered from the shoulder 4 upwardly, to form a sealing-chamber in which the cap 7 is disposed, as just explained, the rib 11, which forms the highest part of the cap, being at a distance below the upper edge of the neck, so as to render a securing device for the cap effective in its operation. The securing device for the cap comprises a bar 17, of suitable sheet or other metal, preferably of sheetsteel, to give ita certain amount of resiliency, and having at opposite ends lower inwardlydirected hooks 18 to take over the flange 6 of the neck 2, as shown by Fig. 1. Extending longitudinally of the bar is a slot 19, and at the upper portions of the ends of said bar are socket-recesses 20. Depending from the central portions of the opposite sides of the bar are ears 21, between which the cam-head 22 of a cam-lever 23 is fulcrumed, the said lever also having an elongated handle 24, which is adapted to be turned down into either of the sockets 20, according as the le ver is released or in locked position. When the cam-head 22 of the lever 23 is turned down in locking position, a portion thereof depends below the ears 21, so as to engage the cavity 10 of the central projection 9 of the cap 7, and thereby securely hold the cap in immovable closed position. When the bar 17 is applied to the jar-neck, the ears 2l den pend into the latter and will be located directly above the projection 9 of the cap 7, so thatI when the lever 23 is turned into locking position the cam-head 22 Will accurately register with the cavity 10. By releasing the lever 23, as shown by dotted lines in Fig. 1, the bar 17 can be slipped off from the neck 2, and the cap 7 is then free for removal from the neck.

From the foregoing it will be seenthat a readily-operated means for closing the mouth of a jar is provided both for sealing and opening purposes without in the least detracting from the effectiveness of the tightness of the joint or hermetic closure desirable in this class of devices.

Another advantage is that the present form of jar-closure seals itself when it contracts after being heated instead of loosening, as is the disadvantage in many jars using outside fasteners.

Other advantages will appear from time to time to those using the improved form of closure, and while the preferred form of the device,includin g the parts described, has been disclosed, it will be understood that changes in the proportions, size, and minor details may be resorted to without in the least departing from the principle of the invention.

Having thus described the invention, what is claimed as new is- The combination with a jar having a neck of considerable depth and provided with an inner lower annular shoulder and an upper outer flange, of a cap having a central up- Wardly-extending projection with a bearingcavity therein and a lower bearing edge, a

rubber gasket interposed between said bearing edge and shoulder, a fastening device consisting of a longitudinally-slotted bar having lower inwardly-directed terminal hooks to removably engage the iiange of the neck and also provided with central depending ears and end sockets onits upper side, anda lever having a cam-head fulcrumed between the ears and adapted to have a portion thereof extend below said ears to engage the bearing-cavity in the central projection of the cap, the outer end of said lever being adapted to enter the sockets at the ends 0f the slotted bar, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

FREDERICK MASoN. 

